SERIAL EVALUATION OF CARDIAC FUNCTION IN CHILDREN UNDERGOING DIALYSIS
| Autor: | R A Meyer, R M Donner, Samuel Kaplan |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Cardiac function curve
medicine.medical_specialty Cardiac output business.industry medicine.medical_treatment Diastole Preload Blood pressure Afterload Internal medicine Pediatrics Perinatology and Child Health Heart rate cardiovascular system medicine Cardiology business Dialysis circulatory and respiratory physiology |
| Zdroj: | Pediatric Research. 14:993-993 |
| ISSN: | 1530-0447 0031-3998 |
| Popis: | Serial echocardiographic (echo) evaluation of cardiac performance in children undergoing chronic dialysis is currently not feasible due to significant dialysis induced changes of heart rate (HR), preload and afterload which alter selected echo indices in the absence of true dysfunction. To eliminate this problem the effect of the independent variables heart rate (HR), preload index (PI) (represented by left ventricular end diastolic dimension (LVED)/a matched control LVED) and afterload (represented by a simultaneously recorded aortic diastolic pressure (DP)) upon pre-ejection period (PEP), ejection time (ET), PEP/ET, shortening fraction (SF), mean circumferential fiber shortening (Vcf), isovolumic contraction time (ICT), maximum posterior wall velocity (PWV) and cardiac output (CO) was evaluated on 92 echograms obtained from four children undergoing chronic dialysis. Multiple linear regression analysis of the data was performed for each patient and for the entire group in order to express each echo index as a function of HR, DP, and PI. Few significant regressions were obtained for the group as a whole but were obtained (r>0.77,P |
| Databáze: | OpenAIRE |
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